EP0310001B1 - Appareil de communication facsimilé - Google Patents

Appareil de communication facsimilé Download PDF

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Publication number
EP0310001B1
EP0310001B1 EP88115909A EP88115909A EP0310001B1 EP 0310001 B1 EP0310001 B1 EP 0310001B1 EP 88115909 A EP88115909 A EP 88115909A EP 88115909 A EP88115909 A EP 88115909A EP 0310001 B1 EP0310001 B1 EP 0310001B1
Authority
EP
European Patent Office
Prior art keywords
conversation
facsimile
signal
message
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88115909A
Other languages
German (de)
English (en)
Other versions
EP0310001A3 (en
EP0310001A2 (fr
Inventor
Matahira Kotani
Masayuki Hachinoda
Toshihiro Matsuda
Takashi Nakajiri
Motohiko Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP62247632A external-priority patent/JPS6490659A/ja
Priority claimed from JP62247634A external-priority patent/JPS6490661A/ja
Priority claimed from JP62247630A external-priority patent/JPS6490657A/ja
Priority claimed from JP62247631A external-priority patent/JPH0626394B2/ja
Priority claimed from JP62247633A external-priority patent/JPH0759016B2/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of EP0310001A2 publication Critical patent/EP0310001A2/fr
Publication of EP0310001A3 publication Critical patent/EP0310001A3/en
Application granted granted Critical
Publication of EP0310001B1 publication Critical patent/EP0310001B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32706—Type of the other apparatus
    • H04N1/32708—Telephone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32719—Detecting a facsimile calling signal, e.g. CNG
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32721—Detecting facsimile protocol signals, e.g. DCS or TSI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32732—Detecting within a predetermined time
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S379/00—Telephonic communications
    • Y10S379/902—Auto-switch for an incoming voice data, or fax telephone call, e.g. comp/fax/tel

Definitions

  • the present invention relates to a facsimile communication apparatus provided with a normal telephone function to exchange conversation.
  • a facsimile communication apparatus provided with an automatic line connection function, when it is operated as a receiver, connects the telephone line after several rings and receives the facsimile signal transmitted from a facsimile communication apparatus of a calling station, but it has no function of accepting automatically a conversation requested by the calling station over the telephone line.
  • a facsimile communication apparatus provided with no automatic line connection function may exchange conversation over the telephone line, but a manual operation is required to switch between the conversation mode and the facsimile mode.
  • a voice signal on the telephone line transmitted from the calling station may be detected to automatically start the conversation, but this method requires a voice detecting means, and thus it results in high manufacturing cost.
  • a facsimile communication apparatus is known from the US-patent US-A-4,677,660.
  • the telephone line is cut as soon as said second predetermined period of time has elapsed.
  • the facsimile control signal producing means is arranged for producing a facsimile control signal all over the first and second periods of time, unless the start of a conversation is detected by the fact that an operator actuates a telephone set button to change from the facsimile mode to the conversation mode. As soon as the conversation mode is actuated, the operator may pick-up the handset of the telephone set to talk to the operator at the calling station.
  • the document JP-A-62-199158 describes a facsimile communication apparatus being combined with an automatic telephone receiver.
  • This apparatus outputs a message at the called station as soon as the network control unit has connected the called station to the telephone line upon receipt of a telephone call from a calling station.
  • the apparatus checks for a predetermined period of time whether the hook of the telephone set is picked-up or whether a facsimile request signal (CNG) is received.
  • CNG facsimile request signal
  • the apparatus automatically switches to a conversation mode, whereas it automatically switches to a facsimile mode when the facsimile request signal is received.
  • the apparatus switches to communication by facsimile.
  • the document GB-A-2 156 187 describes a data communication apparatus connected to a telephone line which apparatus checks during a predetermined period of time whether a control or carrier signal is received. If this is the case, the apparatus switches to a data communication mode; otherwise it switches, after said predetermined period of time has elapsed, to a conversation mode.
  • the just described apparatus has the disadvantage that it is not possible to switch back to the data communication mode as soon as the apparatus has automatically switched to the conversation mode.
  • the apparatus according to the document JP-A-62-199158 has the disadvantage that in any case the message at the called station is announced even when a facsimile device in automatic mode is calling. The message is normally rather long as it has to announce that there is either the possibility to send a facsimile or to speak onto the automatic telephone receiver. Therefore, there is the additional disadvantage that the calling station has to wait a rather long time till it can really build up a facsimile transmission.
  • the apparatus according to the US-patent US-A-4,677,660 has the disadvantage that facsimile control signals are transmitted from the called station all over the first and second predetermined periods of time when no facsimile request signal is received. These facsimile control signals produce rather unpleasant noise at the calling station.
  • the facsimile communication apparatus of the present invention is defined by the teaching of appended claim 1.
  • this apparatus Within a first predetermined period of time, this apparatus only awaits a facsimile request signal from the calling station. When such signal is received, the facsimile transmission will start without having disturbed a person at the called side by announcing an unnecessary message. A message will only be announced during a second predetermined period of time when the first predetermined period of time has elapsed without receiving a facsimile request signal. Neither in the first nor the second predetermined periods of time, facsimile control signals are sent, therefore excluding the development of unpleasant noise at the calling station.
  • the line is not directly cut when stopping the announcement, but then facsimile control signals are transmitted, thereby enabling facsimile transmission with a manually operated station, in which an operator intended to have a telephone call before transmitting a facsimile.
  • a block diagram of a facsimile communication apparatus 1 according to a preferred embodiment of the present invention is shown.
  • the facsimile communication apparatus 1 has a network control unit 2 connected to an external telephone lines L1 and L2.
  • Circuit network control unit 2 has a function to control the line between the external telephone line and the facsimile communication apparatus 1, and also it has an automatic line connection function so that facsimile communication apparatus 1 is connected to the telephone lines after a several telephone rings caused by the dialing of the facsimile calling station.
  • the connection of the facsimile communication apparatus with the telephone lines L1 and L2 is accomplished when the polarity of the telephone lines L1 and L2 is changed.
  • the network control unit 2 is connected to a conversation control 4 having a handset 3 and a plunger 3′ for the telephone conversation between the calling station and the called station.
  • the network control unit 2 is also connected through a modem 7 to a control 6 which produces a signal for changing the mode between conversation mode and facsimile mode, as will be further explained later.
  • Modem 7 modulates and demodulates a carrier signal which the facsimile communication apparatus 1 transmits or receives through the telephone line between the facsimile communication apparatus of the calling station and that of the called station. More specifically, image signal of an original document transmitted from the facsimile communication apparatus of the calling station is modulated by modem 7, and the image signal at the called station is demodulated by modem 7.
  • a signal detector 8 and a signal generator 9 are also provided between network control unit 2 and control 6.
  • the signal detector 8 detects various signals by the detection of signal levels and/or signal frequency of different signals transmitted from the calling station through the telephone line.
  • Signal generator 9 produces a control signal to be transmitted to the calling station in response to a signal outputted from the control 6.
  • Network control unit 2 and control 6 are connected to each other by a line S1 so that when the polarity of the telephone lines L1 and L2 is changed in response to the telephone line connection, the network control unit 2 produces and applies a signal representing the line connection along line S1 to control 6.
  • the message storing unit 10 stores a predetermined message data such as "calling operator" which can be phonetically reproduced.
  • Timer 11 counts a first predetermined time period T1 (such as 5 seconds) and a second predetermined time period T2 (such as 15 seconds) which will be described in detail later.
  • the speaker 12 is provided for phonetically producing a message stored in message memory or tone signal requesting the conversation.
  • the document reading unit 13 is provided for optically reading an image of an original document to be transmitted through facsimile, and a recording unit 14 is provided for recording the received image signal transmitted from the calling station.
  • Fig. 2 is a timing chart showing an operation of an automatic mode selection between a facsimile mode and a telephone conversation mode, either one of which can be performed by the facsimile communication apparatus 1 of Fig. 1.
  • time chart (1) shows a case when the calling station dials the destination station by the auto-dial system requesting only the facsimile transmission and no conversation request
  • time chart (2) shows a case when the calling station dials the destination station after the handset is picked up for requesting the conversation.
  • the automatic dialing system is effected in the calling station to automatically dial the telephone number of the destination station.
  • the calling ring is produced at the destination station, i.e., called station.
  • the automatic telephone line connection function is activated by the network control unit 2 so that, at time t1, the polarity of telephone lines L1 and L2 is changed to connect the called station with the calling station through telephone line L1 and L2.
  • network control unit 2 generates a signal along line S1 in response to the change of the polarity, which is applied to control 6.
  • control 6 starts to count the first predetermined time period T1 (such as 5 seconds).
  • a facsimile request signal (referred to as a CNG signal) which is defined by a calling tone of 1100 Hz that continues for 0.5 second, repeated with an interval of 3 seconds.
  • the CNG signal is usually produced by the auto-dial system.
  • the called station detects the CNG signal by the detector 8, thereby starting necessary steps to start the facsimile signal transmission. More specifically, after time t2, i.e., after counting the first predetermined time period T1, the called station produces and sends a called station identification signal (referred to as CED signal) to the calling station.
  • CED signal called station identification signal
  • the CED signal is defined by a tonal signal of 2100 Hz which continues for 2.6 seconds to 4 seconds.
  • the calling station is informed that the facsimile transmission can be started.
  • the called station further produces and sends the following control signals to the calling station in the following order: non-standard facilities signal (NFS signal 0000 0100), a called station identification signal (CSI signal 0000 0010), and a digital identification signal (DIS signal 0000 0001).
  • NFS signal 0000 0100 non-standard facilities signal
  • CSI signal 0000 0010 called station identification signal
  • DIS signal 0000 0001 digital identification signal
  • control unit 6 When the signal detector 8 detects the CNG signal received by the network control unit 2, signal detector 8 produces and sends a signal indicative of the receipt of the CNG signal to the control 6. In response to this signal, control unit 6 outputs a signal to the signal generator 9, indicating that the above-described control signals should be produced. In response to this signal, the signal generator 9 generates the control signals in the order as described above. The control signals are further transmitted from the network control unit 2 to the facsimile communication apparatus of the calling station through the telephone line.
  • time chart (2) of Fig. 2 At time t0, to request the conversation, an operator at the calling station picks up the handset 3 and dials the telephone number of the destination station. Thereupon, the calling ring is produced at the destination station, i.e., called station. At the called station, when the telephone bell rings a predetermined number of times, the automatic telephone line connection function is activated by the network control unit 2 to connect the called station with the calling station through telephone lines L1 and L2. Also, at time t1, network control unit 2 generates a signal along line S1 in response to the change of the polarity, which is applied to control 6. Thereupon, using timer 11, control 6 starts to count the first predetermined time period T1 (such as 5 seconds).
  • T1 such as 5 seconds
  • the message announce at the called station and the message heard at the calling station are the same, but they can be different, such that the calling station may hear the ringing sound.
  • the person requesting the conversation will know that the conversation request is being continued.
  • control 6 produces a mode change signal to network control unit 2.
  • network control unit 2 changes the mode from facsimile mode to conversation mode, thereby enabling the conversation between the calling and called stations.
  • the person at the calling station who has been waiting for somebody to answer the telephone but in vein, presses the transmission start key after the lapse of time period T2 at which he can confirm the receipt of the CED signal indicating that the facsimile communication procedure has been started. Therefore, in this case, no CNG signal is produced by the signal transmitting unit 9. That is, if the telephone call is not answered by the called station during the second time period T2, the operator of the calling station can start the facsimile communication procedure.
  • a flowchart shows the operation of control 6 of the facsimile communication apparatus of the present invention.
  • step n3 It is detected at step n3 whether or not the CNG signal has been detected. If yes, the program goes to step n10 at which the CED signal is transmitted to the calling station and a facsimile communication procedure starts. If no, the program goes to step n4 at which it is detected whether or not the first predetermined time period T1 is counted. If no, the program goes back to step n3. If yes, the program advances to step n5.
  • timer 11 starts to count the second predetermined time period T2.
  • a conversation request message is produced phonetically by speaker 12.
  • the conversation request message is transmitted to the calling station through the telephone lines.
  • step n8 it is detected whether or not the second predetermined time period T2 is counted. If no, the program goes to step n9.
  • step n9 it is detected whether or not handset 3 is lifted, i.e., it is decided whether or not plunger 3′ has been projected. If yes, that is, if somebody at the called station picks up the handset or depresses the conversation start button, then it is possible to start a conversation between the persons on the telephones at the calling station and the called station. If nobody answers the telephone within the time period T2 at the called station, the program goes back to step n6.
  • step n8 If it is detected at step n8 that the second time period T2 is counted, the program goes to step n10 at which the CED signal is transmitted to the calling station and a facsimile communication procedure starts.
  • the facsimile communication apparatus provided with the automatic line connection function may accept either the facsimile transmission or conversation, and yet it may accept the facsimile telephone call from the automatic dialing system or from the manual dialing system.
  • the facsimile communication apparatus according to the present invention is widely applicable in this field.
  • the facsimile communication apparatus provided with the automatic line connection function according to the present invention is applicable both to facsimile communications and telephone calls.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)
  • Telephonic Communication Services (AREA)

Claims (8)

  1. Appareil de communication fac-similé pour un poste appelé, appareil qui peut fonctionner soit en mode fac-similé pour recevoir un signal fac-similé transmis à partir d'un poste appelant, via une ligne téléphonique, soit en mode de conversation pour recevoir un signal de conversation à partir d'un poste appelant, via une ligne téléphonique, ledit appareil de communication fac-similé comprenant:
    - une unité de commande de réseau (2), destinée à connecter automatiquement l'appareil à la ligne téléphonique à la réception d'un appel téléphonique à partir d'un poste appelant,
    - un moyen temporisateur (11), destiné à compter un premier laps de temps prédéterminé (T1) et un second laps de temps prédéterminé (T2) suivant le comptage dudit premier laps de temps prédéterminé,
    - un moyen de détection (8), destiné à détecter un signal de demande de fac-similé (signal CNG) du poste appelant et à délivrer,dans ce cas, un signal de détection,
    - un moyen producteur de signaux de commande de fac-similé (9), destiné à produire un signal de commande de fac-similé (CED, NFS, CSI, DIS),
    - un moyen de commande de conversation (6), destiné à détecter le début d'une conversation, et
    - un moyen producteur de messages (10, 6, 12), destiné à produire et à délivrer un message pendant ledit second laps de temps prédéterminé tant que ni ledit signal de détection n'est sorti par ledit moyen de détection, ni le début d'une conversation n'est détecté par ledit moyen de commande de conversation,
    caractérisé en ce
    - que ledit moyen de détection est agencé pour détecter ledit signal de demande de fac-similé du poste appelant uniquement pendant ledit premier laps de temps prédéterminé,
    - que ledit moyen producteur de messages est agencé pour produire et délivrer ledit message uniquement pendant ledit second laps de temps prédéterminé, pour autant qu'aucun début de conversation n'est détecté par ledit moyen de commande de conversation, et
    - que ledit moyen producteur de signaux de commande de fac-similé (9) est agencé pour produire ledit signal de commande de fac-similé soit lors de la réception dudit signal de détection dudit moyen de détection, soit lorsque ledit second laps de temps prédéterminé s'est écoulé sans que le début d'une conversation n'ait été détecté par ledit moyen de commande de conversation.
  2. Appareil suivant la revendication 1, dans lequel ladite unité de commande de réseau (2) est agencée pour faire fonctionner ledit appareil de communication fac-similé en mode de conversation pendant ledit second laps de temps (T2).
  3. Appareil suivant la revendication 1, dans lequel ladite unité de commande de réseau (2) est agencée pour faire fonctionner ledit appareil de communication fac-similé en mode de conversation dès que ledit moyen de commande de conversation (6) détecte le début d'une conversation.
  4. Appareil suivant l'une des revendications précédentes, dans lequel le moyen de commande de conversation (6) est agencé pour détecter le début d'une conversation en détectant la levée d'un combiné (3).
  5. Appareil suivant l'une des revendications précédentes, dans lequel ledit moyen de commande de conversation (6) est agencé pour détecter le début d'une conversation en détectant l'enfoncement d'un bouton de départ de conversation.
  6. Appareil suivant l'une des revendications précédentes, dans lequel ledit moyen producteur de messages (6, 10, 12) produit un message sous forme d'annonce.
  7. Appareil suivant l'une des revendications précédentes, dans lequel ledit moyen producteur de messages comprend un moyen de mémoire de messages (10) destiné à mémoriser un message prédéterminé et un moyen haut-parleur (12) destiné à produire ledit message phonétiquement.
  8. Appareil suivant l'une des revendications 1 à 5, dans lequel ledit moyen producteur de messages (6, 12) produit un message sous forme d'un simple son.
EP88115909A 1987-09-30 1988-09-27 Appareil de communication facsimilé Expired - Lifetime EP0310001B1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP62247632A JPS6490659A (en) 1987-09-30 1987-09-30 Facsimile communication equipment
JP62247634A JPS6490661A (en) 1987-09-30 1987-09-30 Facsimile communication equipment
JP62247630A JPS6490657A (en) 1987-09-30 1987-09-30 Facsimile communication equipment
JP62247631A JPH0626394B2 (ja) 1987-09-30 1987-09-30 ファクシミリ通信装置
JP247632/87 1987-09-30
JP247634/87 1987-09-30
JP62247633A JPH0759016B2 (ja) 1987-09-30 1987-09-30 ファクシミリ通信装置
JP247630/87 1987-09-30
JP247633/87 1987-09-30
JP247631/87 1987-09-30

Publications (3)

Publication Number Publication Date
EP0310001A2 EP0310001A2 (fr) 1989-04-05
EP0310001A3 EP0310001A3 (en) 1990-10-10
EP0310001B1 true EP0310001B1 (fr) 1994-11-30

Family

ID=27530148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115909A Expired - Lifetime EP0310001B1 (fr) 1987-09-30 1988-09-27 Appareil de communication facsimilé

Country Status (4)

Country Link
US (1) US4908851A (fr)
EP (1) EP0310001B1 (fr)
CA (1) CA1294078C (fr)
DE (1) DE3852264T2 (fr)

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EP0310001A3 (en) 1990-10-10
EP0310001A2 (fr) 1989-04-05
DE3852264D1 (de) 1995-01-12
DE3852264T2 (de) 1995-07-06
CA1294078C (fr) 1992-01-07
US4908851A (en) 1990-03-13

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